Gaya APA

E.Walvoord, B. (1988). Three Steps To Revising Your Writing For Style, Grammar, Punctuation, And Spelling . Boston: Scott, Foresma and Companyy.

Gaya MLA

E.Walvoord, Barbara. "Three Steps To Revising Your Writing For Style, Grammar, Punctuation, And Spelling". Boston: Scott, Foresma and Companyy, 1988. Text.